Paul: I bought one of the first C line transmitters and recievers when they first came out. They had the plastic gears. I ruined the receivers PTO gearing twice before I learned not to 'BANG" the dial against the dial stops on each end. Before obtaining my C line I had a TR-4 with metal gears and I "BANGED" the dial on it's end stops all the time. No problem. But with the plastic gears, you could ruin them in a day. I learned very quickly, you never do this with the plastic gearing. It took 3 PTO changes before I got smart to all this.
Also, you never oil the plastic gears as the oil can and will make the gears swell and bind up. I found that if you don't put oil/grease on the plastic gears and don't bang the dial on it's end stops the plastic gears will last and not give any problems. You don't have to worry about this with metal gearing. Plastic gearing is fine if you don't abuse them or buy a radio that had been abused. Longivity has to do with how they were treated and not how much operating time is on them. Lee, w0vt ----- Original Message ----- From: Paul Christensen To: [email protected] Sent: Monday, May 11, 2009 7:02 PM Subject: [Drakelist] R-4C PTO Gear Differences Anyone have any data relating to PTO gear longevity in the R-4C when comparing Nylon with metal geared versions? I have two R-4Cs, one is S/N 25K with Nylon gears, the other is 28K with a combination of metal and Nylon. The Nylon geared unit has almost no operating time but its back-lash mechanism appears a bit inferior to that of the metal/Nylon unit. On the other hand, overall tuning feel and rotational noise is less with the metal/Nylon unit. Paul, W9AC ------------------------------------------------------------------------------ _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
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